In industrial applications where reels are managed, achieving optimal web tension control is paramount, especially within the domain of shaftless solutions. A key aspect of this endeavor lies in accurately managing the core of the reel, regardless of its material composition, whether cardboard, steel, or plastic, to maintain consistent tension levels during both unwinding and rewinding processes.
The significance of preserve such precision directly impacts the quality of the final product by averting defects like tears and misalignment within the material being processed. These flaws not only compromise the visual appeal of the final product but also its functional characteristics, potentially rendering it unfit for use.
Furthermore, maintaining consistent web tension control significantly enhances productivity by reducing downtime stemming from machinery malfunctions or the need for rework due to tension-induced imperfections. This operational refinement enables manufacturers to streamline their production processes, maximizing their overall output.
Renova’s high-gripping Core Chuck Line
Renova’s range of expanding core chucks emerges as an optimal solution for handling rolls of varying sizes, weights, and materials in shaftless setups. These chucks are engineered to ensure the reel’s core remains well-balanced and securely blocked, thereby upholding the most stable web tension achievable.
In today’s manufacturing landscape, where the quality and thickness of reel cores may fall short of stringent standards, the use of high-quality mechanical chucks becomes imperative. Renova’s mechanical chucks offer optimal adherence without compromising the integrity of the core, effectively mitigating any risks of slippage.
100% customizable to fit any shaftless roll stand
Renova’s versatile core chuck line is designed to accommodate diverse applications and seamlessly integrate with existing machinery setups without requiring extensive modifications. These chucks offer full customization, catering to individual customer specifications, and demand minimal maintenance, allowing for easy cleaning directly on the roll stand.
Developed to minimize waste, prevent core slippage, and reduce leftover paper on the core, Renova’s core chucks boast advanced installation features that facilitate easy integration across various applications, all while prioritizing user convenience and maintenance simplicity.
Torque activated core chucks, pneumatic core chucks and side load chucks
Renova’s core chucks stand at the heart of shaftless roll stands, serving as essential components for unwinding and rewinding in various reel management scenarios.
These chucks come in three distinct models:
Pneumo-mechanical core chucks: These are ideal for situations where the core needs to be securely locked without any twisting moment, enabling the transmission of high torque values and/or working at high speeds. Thr expansion units, activated by air pressure, safely lock the reel core in place.
Side-load core chucks: Equipped with a spring system, these chucks utilize axial thrust when inserted into the reel core. This action expands a series of splines, guaranteeing the right grip to the reel.
Torque-activated chucks: These chucks automatically block and center the reel core using the movement of the reel itself. Focusing on achieving consistent tension at any operational speed and requiring minimal maintenance, Renova’s torque-activated chucks employ an optimized design comprising cam, adapter, and expansion units for reliable performance. These three elements together create a heavy-duty reliable chuck in single and double diameters, from 3 to 12 inches.
Three cam designs are available:
- The trilobate core chuck boasts a simple yet innovative design. It is crafted from a single piece without rollers or pins. The expansion units are activated through sliding friction generated by brake operation and the necessary web tension.
- The exalobate cam features a dual-pin activation mechanism for smoother and faster expansion. It utilizes rolling friction instead of sliding friction, thus distributing thrust force across two points of the expansion unit.
- The patented cam incorporates an auto-neutral position and a minimal engagement angle, ensuring seamless transition from loading to full contact. Engineered to withstand accidental side pressure and axial force, it provides reliable performance under various conditions.
- The newly designed adapter prioritizes lateral contact with the core, minimizing the risk of paper damage. Meanwhile, the expansion units achieve immediate 100% contact with the core, optimizing grip and stability during operation.Inizio modulo
- Available in various finishes such as smooth or grooved for cardboard cores, and carbide or rubber for steel, aluminum, or hard plastic cores, they offer enhanced grip where needed.
- The unique lip design compensates for short or shrunk cores and is tailored to accommodate thin-walled cores, preventing lateral damage on rolls, even during unwinding down to the last meters.
- These innovations, alongside features like quick-change systems, ensure efficient operation and minimal waste generation, further enhancing the overall productivity of industrial processes.
Ensuring Efficiency and Minimal Waste Generation
Manufactured in Italy, Renova’s core chucks exhibit superior engineering and customizable components tailored to meet diverse application needs. With Renova’s core chucks, manufacturers can effectively optimize their production processes, achieving consistent quality output while minimizing operational disruptions.
